RT Journal Article
SR Electronic
T1 Epidemiologic methods. Studying the occurrence of illness
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 1055
OP 1055
VO 58
IS 12
A1 de Irala, Jokin
YR 2004
UL http://jech.bmj.com/content/58/12/1055.3.abstract
AB